<!DOCTYPE html>
<html lang="en">
<head>
  <!-- Required meta tags -->
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no">

  <!-- Bootstrap CSS -->
  <link rel="stylesheet" href="./css/bootstrap.css">
  <style>
    /*.row{
      background: #000000;
      margin-bottom: 2rem;
    }
    .row div{
      background: #399;
      border:1px solid #000000;
    }*/

  </style>
</head>
<body>
<!--徽章 -->
<div class="container">
  <ol class="breadcrumb">
    <li class="breadcrumb-item active">Home</li>
  </ol>
  <ol class="breadcrumb">
    <li class="breadcrumb-item"><a href="#">Home</a></li>
    <li class="breadcrumb-item active">Library</li>
  </ol>
  <ol class="breadcrumb">
    <li class="breadcrumb-item"><a href="#">Home</a></li>
    <li class="breadcrumb-item"><a href="#">Library</a></li>
    <li class="breadcrumb-item active">Data</li>
  </ol>
</div>
<!--<script src="./js/bootstrap.js"></script>-->
</body>
</html>